Include manifest in Api#Repositories#dependencies to fix N+1
Include manifest in Api#Repositories#dependencies to fix N+1

Example with 122 repository deps:

Before:
Benchmark.ms { r.repository_dependencies.includes(:project).map { |d| DependencySerializer.new(d) }.as_json }
=> 996.7429660000562

After:
Benchmark.ms { r.repository_dependencies.includes(:project, :manifest).map { |d| DependencySerializer.new(d) }.as_json }
=> 634.9350350001259

librariesio/libraries.io,librariesio/libraries.io,librariesio/libraries.io,librariesio/libraries.io